Abstract: The invention relates to a method, comprising: obtaining a first set of radio resources available to send a forward packet from a first user equipment; obtaining a second set of radio resources available to perform an operation related to the forward packet; selecting, among said first set of radio resources, a first radio resource having a first time so that at least one second radio resource from the second set is comprised in a time window having a lower bound after said first time and an upper bound defined according to at least one of said forward packet; sending, by the first user equipment, said forward packet using said first radio resource.

Abstract: A method for learning QoS performance inter-dependence of a plurality of communication links in a network managed by a central node, wherein the plurality of wireless links interface with a common application applying a joint figure of merit, comprising: selecting at least two links among the plurality of communication links; generating training requests respectively for each selected link; measuring QoS performance on each selected link for the training requests; and combining the measured QoS performance of the selected links, so as to obtain the QoS performance inter-dependence between the selected links.

Abstract: The invention relates to a method for determining a repartition of a set of user equipments handled by a wireless communication system. The wireless communication system comprises a core network component comprising a network functional entity (NWDAF and/or NET). The method comprises, at the network functional entity, obtaining a grouping criterion from a requesting party, and providing to the requesting party a repartition of at least part of the set of user equipments into groups of user equipments formed according to said grouping criterion. The invention further relates to a corresponding communication system and a corresponding computer program.

Abstract: A method for allocating a radio resource in a system comprising a resource scheduler and a set of devices is disclosed. Each device hosts at least one application, each application transmitting messages to at least one receiver on a transmission channel. The resource scheduler first receives, from each application, application parameters representative of application's requirements. Then, it computes, for each application, a metric responsive to at least part of the received application parameters, to an average probability of failure of said application and further to a channel error probability of said transmission channel. The metrics are compared and, responsive to said comparison, it selects the application to allocate the radio resource to. The average probability of failure each application is further updated. Finally, it transmits an instantaneous probability of failure to each application, said instantaneous probability of failure being used by said application to update its application parameters.

Abstract: The invention relates to a method for optimizing a capacity of a communication channel in a communication system comprising at least a transmitter, a receiver, said communication channel between the transmitter and the receiver, and a channel conditional probability distribution estimator. The transmitter transmits messages conveyed by a signal associated with a transmission probability according to an input signal probability distribution estimated by said estimator. The transmitter takes at least the messages as inputs and outputs the signal to be transmitted on the channel. The channel takes the transmitted signal as an input and outputs a received signal which is processed at the receiver in order to decode the transmitted message. The probability distribution for each possible transmitted signal is estimated from at least output signals received at the receiver, and by using a collapsed Gibbs sampling relying on a Dirichlet process.

Abstract: The invention relates to a method for clustering data flows established through a wireless bridge of a communication system within a time-sensitive network. The method comprises obtaining, at a functional entity of a core network component of the wireless bridge, for a plurality of data flows, indicators of a sequential communication performance and of a concurrent communication performance of each said data flow. The data flows are then clustered based on the obtained indicators, such that two given data flows are independent if the difference between the sequential communication performance and the concurrent communication performance is lower than a predetermined threshold, and are otherwise dependent, any two data flows belonging to two different clusters are independent, and any two data flows of the same cluster are dependent. The invention further relates to a corresponding communication system and a corresponding computer program.

Abstract: The disclosure relates to a method for calculating capabilities of a WB in a communication system within a TSN network. The WB comprises at least a UPF, a BS and a UE. The UPF comprises at least one NW port enabling communication between said BS and a first subnetwork. The UE is wirelessly connected, within the TSN network, to said BS, and comprises a DS port enabling communication with a second subnetwork. The method is performed at the WB and comprises estimating a performance capacity of the wireless connection between the BS and the UE based on information related to an intended network usage for time-sensitive communication at the WB, and calculating the TSN capabilities of the WB corresponding to the estimated performance capacity. The disclosure further relates to a corresponding communication system.

Abstract: Methods and products for processing stream requests are provided. Upon obtaining the stream requests, an initial TSN scheduling is computed at a CNC based on an initial TSN capability obtained from a dynamic bridge (DB). Then, a loop is started. At each iteration, it is determined, based on information related at least to the last computed TSN scheduling, whether or not to provide information related to an updated TSN capability of the DB to the CNC. If it is decided to provide said information, the CNC computes, based on said information, an updated TSN scheduling. Else, the loop is exited. It is determined, based on at least one computed TSN scheduling, whether to configure the TSN according to one of said at least one computed TSN scheduling or to request an adjustment of at least one stream request.

Abstract: A method for transmitting binary data using a M-ASK constellation divided into M/2 sets of two symbols is disclosed. Each set of index i comprises the ith and ith+M/2 symbols of the constellation and is associated with a probability pi of transmitting the first symbol of the set. First, m?1 bits are obtained from an equiprobable binary source where m=log2M. A binary source is then selected in a plurality of binary sources responsive to said m?1 bits, each binary source of index i being associated with a probability of outputting a bit zero equal to pi. A symbol of the M-ASK constellation is obtained that is associated with the binary word formed by the m?1 bits as less significant bits and a bit obtained from the selected source as most significant bit. The symbol is finally transmitted to a receiver over a communication channel.

Abstract: A method for geolocating an interference source in a communication-based transport system, wherein the communication-based transport system comprises: —a plurality of interference sources, distributed in a space and respectively emitting signal, —a vehicle, moving along a known trajectory, receiving the signal from the interference sources, and measuring the signal strength of the signal of only one interference source at a time instance; the method comprising: —separating the interference sources by clustering the signal strength of the signal with a clustering method; —estimating the locations of the interference sources in the space based on the separated interference sources.

Abstract: A method for characterizing a radiofrequency environment, comprising: obtaining measurements of geometrical properties of physical objects in the environment, geometrical properties including at least respective positions and dimensions of objects, simulating radiofrequency ray-tracings involving a multiplicity of simulated rays, each ray being: emitted by a transmitter located in said environment in a transmitter position, and/or received by a receiver located in said environment in a receiver position, each pair of a transmitter and a receiver positions defining therebetween a radiofrequency path where rays possibly interact with at least a part of objects, selecting, among all the paths, at least one path defined by rays interacting with the objects which interact the most with rays, obtaining radiofrequency measurements of a radiofrequency channel defined by the selected path and estimating radiofrequency properties of objects interacting in selected path, radiofrequency properties and geometrical prop

Abstract: A resource reservation method in a private wireless communication network comprises: Obtaining a trajectory, a velocity and a radio communication range for each terminal; Identifying, from obtained data, whether there is a space area and a corresponding time interval where at least two radio communication ranges are going to intersect; In the case of intersection, identifying whether there is a risk of collision in said time interval between packets to be sent or received by the terminals whose radio communication ranges intersect; In the case where a risk of collision is identified, generating assistance data in the form of preferred and/or non-preferred radio resources from metric values stored in a database and transmitting the generated assistance data to at least one terminal; and Using, by said at least one terminal, the generated assistance data transmitted by the application server for adapting radio resource reservation.

Abstract: A method includes: determining a set of all possible configurations of occupation or non-occupation of a set of transmission bands, defined as a set of possible vectors; building a matrix from a stacking of all the possible vectors; obtaining measurements of occupation of at least a part of the set of channels, at respective time instants; and computing probabilities using a channel transition function so as to determine, for each transmission band, an estimated activation rate, on the basis of the measurements. The estimated activation rate corresponds to an occupation rate of a transmission band by an interferer within the given observation time window, and the probabilities computations include an iterative resolution of a non-linear optimization problem with a constraint derived from the Gibbs' inequality.

Abstract: Examples include a method to communicate between a first and a second synchronized mobile devices, the method comprising sensing a plurality of preconfigured radio resources and identifying for each sensed preconfigured radio resource, whether it is occupied. The method also comprises receiving an indication of future occupied preconfigured radio resource utilization by further mobile devices in the spatial domain, and selecting a specific pre-configured radio resource reducing or preventing communication collisions in the spatial domain. The method further comprises the first and the second mobile devices communicating using the selected specific preconfigured radio resource.

Abstract: A method for estimating a performance of a wireless communication network for a given time-frequency resource allocation is disclosed. The communications in said wireless communication network are subject to interferences whose activation is modeled by a binary random variable bt indicating whether an interferer is active or not at a time instant t, the discrete-time stochastic process {bt}t?[??;+?] being modelled by a Markov chain with memory M. A frequency channel sequence associated with at least one set of consecutive observations of interference activation is determined from a frequency hopping sequence. The Markov chain associated with the determined frequency channel sequence is then identified and a set of probabilities of the identified Markov chain is updated according to the obtained at least one set of consecutive observations of interference activation.

Abstract: The disclosure relates to characterizing radiofrequency interference caused by a plurality of sources. At least one observing device is used for scanning successively a plurality of radiofrequency bands for performing interference measurements in the plurality of radiofrequency bands, in different space locations, and at different time instants, and provides observations at successive time instants of a current position of the observing device, and a received interference power in an observed frequency band. For each interference source and each observation, a likelihood probability to attribute one observation to one interference source is computed. This likelihood probability computations are used for assigning each of said observations to one interference source. More particularly, the likelihood probability computing is based on both frequency observation and interference power observation.

Abstract: A value of a first figure of merit representative of routing performance throughout the multi-hop network is obtained. Independently of the values of the first figure of merit, a value of a second figure of merit representative of transmission performance between the base station and the multi-hop network for each candidate configuration of transmission between the base station and the entry points of the multi-hop network is computed. Values of a third figure of merit representative of a trade-off between routing performance throughout the multi-hop network and transmission performance between the base station and the multi-hop network is then computed by combining values of the first figure of merit and of the second figure of merit. Then, the candidate configuration which shows the best value of the third figure of merit is selected to perform the transmission of data.

Abstract: The invention relates to a method for optimizing a capacity of a communication channel in a communication system comprising at least a transmitter (10), a receiver (11), and the communication channel (12) between the transmitter and the receiver. The transmitter (10) uses a finite set of symbols ?={?1, . . . , ?N} having respective positions on a constellation, to transmit a message including at least one symbol on said communication channel (11). The communication channel (11) is characterized by a conditional probability distribution ?Y|X(y|x), where y is the symbol received at the receiver (12) while x is the symbol transmitted by the transmitter. More particularly, the conditional probability distribution ?Y|X(y|x) is obtained, for each possible transmitted symbol x, by a mixture model using probability distributions represented by exponential functions.

Abstract: The disclosure relates to a method for scheduling TSN flows in a communication system within a time-sensitive network. The method is implemented at a central network configuration entity. Assistance information relating to a time granularity of transmission opportunities within a radio frame is obtained from at least one TSN bridge. Based on the obtained assistance information, a plurality of TSN flows is scheduled by computing time sequences of said TSN flows down to said time granularity. The disclosure further relates to a corresponding communication system and a corresponding central network configuration entity.

Abstract: Example implementations relate to a method for synchronizing a specific node connected to a plurality of other nodes. The method comprises receiving a respective synchronization quality value for a transmitting other node. The method also comprises measuring a respective propagation medium quality value with the transmitting other node. The method further comprises updating a specific synchronization reference of the specific node, whereby the updating comprises assigning to a respective contribution of the transmitting other node a respective weight of the transmitting other node, the respective weight being a function of the respective synchronization quality value of the transmitting other node and of the respective propagation medium quality value with the transmitting other node. The method also comprises revising a specific synchronization quality value and emitting to a receiving other node the revised specific synchronization quality value.